Extension tool

ABSTRACT

An extension tool is disclosed comprising a first pole and a second pole. The second pole is partially disposed in the first pole for defining a variable overall tool length. A slide controller includes a lower clamp and an upper clamp. The first pole is disposed in the lower clamp. A first clamp compressor applies a compressive force to the lower clamp for defining a lower clamp lock and coupes the slide controller with the first pole. A second clamp compressor applies a compressive force to the upper clamp for defining an upper clamp lock and prevents slidable displacement of the second pole relative to the first pole. The second clamp compressor applies a non-compressive force to the upper clamp for defining an upper slide guide. The upper slide guide facilitates the slidable displacement of the second pole relative to the first pole.

CROSS-REFERENCE TO RELATED APPLICATIONS

This application claims benefit of U.S. Patent Provisional applicationNo. 61/459,635 filed Dec. 16, 2010. All subject matter set forth inprovisional application No. 61/459,635 filed Dec. 16, 2010 is herebyincorporated by reference into the present application as if fully setforth herein.

BACKGROUND OF THE INVENTION

1. Field of the Invention

This invention relates to tools and more particularly to the extensiontool for displacing an object.

2. Background of the Invention

Various types of tools have been advised in the past for moving orrotating objects. One particular application of these tools is therotation of a break actuator for a wheel brake located on a railroadcar. Typically, the railroad car wheel break is actuated by rotating thebreak actuator. The break actuator may include a wheel having aplurality of spokes extending from a central hub. The rotation of thewheel rotates the hub and a shaft attached thereto for manually engaginga brake shoe to a surface of the railroad car wheel. The engagement ofthe brake shoe against the railroad car wheel prevents undesiredmovement of the railroad train car.

In most cases, the break actuator is located on the upper end of therailroad car. This necessitated the railroad employee to climb a ladderbetween typically two adjacent railroad cars to rotate the wheel on eachof the railroad cars. Thereafter, the employee must descend the latterto move to the next railroad car climb the ladder and rotate the wheelin a similar pattern.

This procedure is very time consuming and possibly dangerous activitysince the railroad employee is required to climb the ladders on each ofthe railroad cars which are in many cases located between two adjacentrailroad cars. The following U.S. patents are examples of attempts ofthe prior art to solve these problems.

U.S. Pat. No. 684,858 to Pearson discloses a wire fence tool comprisinga handle, a hatchet-blade thereon having a disk-shaped facial recess inone side. A wire-cutter is seated in the recess and forms a flushportion of the hatchet-blade. An opening lever-handle is connected withthe cutter-disk and a retaining loop for the lever-handle. Thehatchet-blade and cutter-disk are provided with registeringwire-receiving notches.

U.S. Pat. No. 872,271 to Benet discloses a device combining a pair ofmembers connected pivotally together and provided with claws for thepurpose of gripping a nail or the like. One of the members is providedwith a longitudinal portion for increasing the leverage between theclaws. The longitudinal portion terminates at one of its ends in a screwdriver blade having a sharp portion and also having shoulders disposedupon opposite sides of the sharp portion. A handle is mountedtelescopically upon the longitudinal portion of the blade and isprovided with a pair of oppositely disposed impact surfaces for engagingthe shoulders and receiving therefrom the force of impact so as to avoidinjury to the sharp portion of the screw driver blade.

U.S. Pat. No. 4,646,378 to Borden discloses a combination toolcomprising a first and a second tool members with hinge structurepivotally securing the first and the second members together so thatthey may be selectively pivoted between opened and closed positions ofuse wherein. The first tool member includes a pair of spaced-apartgenerally parallel extending side walls forming a sheath portion betweenwhich the second tool member may be folded or enclosed in closedposition thereof. The first tool member also includes a first toolportion and a first bridge portion at one end thereof and a secondbridge portion adjacent the other end thereof but intermediate theseends. The first and second bridge also extend between and integrallyconnecting side walls. The second tool member includes a second andthird tool portions at opposite ends thereof and an intermediate regionadjacent the second tool portion with this intermediate region beingdisposed between the side walls and hingedly assembled adjacent theother end of the first tool member, wherein in the folded or closedposition of the combination tool, the second tool member is disposedbetween the side walls and resting on the bridge portions and the secondand third tool portions extend beyond the opposite ends of the firsttool member and the first tool portion is disposed in exposed conditionso that all three tool portions are available for use in both the openedand folded or closed conditions of the tool members.

U.S. Pat. No. 4,715,252 to Pella discloses a device for safely rotatingthe wheel of a large or hard-to-turn valve. The wrench comprises anelongated handle, and a wheel grip. The wheel grip further consists of arim grip and a spoke grip. The rim grip extends upwardly (when viewedfrom above) around the bottom of the rim of a valve wheel. The spokegrip extends downwardly, first around the rim of the wheel, theninwardly, so as to grasp the spoke of the valve wheel.

U.S. Pat. No. 4,991,469 to Pella discloses a device for safely rotatingthe handwheel of hard-to-turn valves has an elongate handle terminatingin a fixed wheel-rim-engaging jaw. A movable wheel-engaging jaw ispivotally attached to the handle behind the fixed jaw. When the movablejaw is applied to the inner surface of the handwheel rim and the fixedjaw is applied to the outer surface of the rim, turning force on thehandle forces the two jaws together by a leveraged force to enhancegripping of the rim while turning the wheel. Protuberances on themovable jaw enhance gripping the wheel rim and spoke.

U.S. Pat. No. 5,481,950 to Browning discloses a rigid head extendinglaterally from an adjustable handle has an elongate slot therethroughaligned with the longitudinal axis, of the handle for receiving andoperating the handle of a valve. A first concave surface is formed inthe upper edge of the head for pushing on the spokes of a brake wheel.The first concave surface has opposite ends of similar slope approachingninety degrees relative to the upper edge for pushing on the spokes of abrake wheel and preventing kick-out of the tool from the brake wheel. Asecond concave surface is formed in the lower edge of the head forpulling on the spokes of a brake wheel. A first end of the secondconcave surface has a slope approaching ninety degrees relative to thelower edge of the head which is significantly less than the slope of thefirst end to facilitate kick-out of the tool while the brake wheel is inmotion. The second concave surface slopes to a point where it joins theouter edge of the head to define a point adapted to fit within a hole ina knuckle of a railroad car.

Although the aforementioned prior art have contributed to thedevelopment of the art of tools, none of these prior art patents havesolved the needs of the art.

Therefore, is an object of this invention to provide an improved toolfor rotating the break actuator of a railroad car for actuating a wheelbreak.

Another object of this invention is to provide an improved tool forpivoting a knuckle coupler of a railroad car.

Another object of this invention is to provide an improved tool that islight weight and easy to carry.

Another object of this invention is to provide an improved tool that canbe extended and retracted for varying the length of the tool.

Another object of this invention is to provide an improved tool that maybe extended and retracted with a minimum resistance force.

Another object of this invention is to provide an improved tool that maybe extended and retracted without jamming.

The foregoing has outlined some of the more pertinent objects of thepresent invention. These objects should be construed as being merelyillustrative of some of the more prominent features and applications ofthe invention. Many other beneficial results can be obtained bymodifying the invention within the scope of the invention. Accordinglyother objects in a full understanding of the invention may be had byreferring to the summary of the invention, the detailed descriptiondescribing the preferred embodiment in addition to the scope of theinvention defined by the claims taken in conjunction with theaccompanying drawings.

SUMMARY OF THE INVENTION

The present invention is defined by the appended claims with specificembodiments being shown in the attached drawings. For the purpose ofsummarizing the invention, the invention an relates to an improvedextension tool. The extension tool comprises a first pole defining aninterior bore and a first exterior surface with the first pole extendingbetween a first end and a second end. A second pole defines a secondexterior surface with the second pole extending between a first cod anda second end. The second pole is partially disposed in the first polefor defining a variable overall tool length. A slide controller includesa lower clamp and an upper clamp. The lower clamp has a primary arm anda secondary arm for defining a first coupler interior bore. The upperclamp has a primary arm and a secondary arm for defining a secondcoupler interior bore. The second end of the first pole is disposed inthe first coupler interior bore of the lower clamp. A first clampcompressor extends between the primary arm and the secondary arm of thelower clamp and applying a compressive force between the primary arm andthe secondary arm for defining a lower clamp lock and coupling the slidecontroller with the first pole. A second clamp compressor extendsbetween the primary arm and the secondary arm of the upper clamp andapplying a compressive force between the primary arm and the secondaryarm for defining an upper clamp lock and preventing slidabledisplacement of the second pole relative to the first pole. The secondclamp compressor applies a non-compressive force between the primary armand the secondary arm for the upper clamp defining an upper slide guide.The upper slide guide facilitates the slidable displacement of thesecond pole relative to the first pole.

In a more specific embodiment of the invention, a bushing defines aninternal bore and an exterior surface. The first end of the second poleis disposed and coupled to the internal bore of the bushing. Theexterior surface of the bushing slidably engages with the interior boreof the first pole for defining a lower slide guide. The lower slideguide and the upper slide guide facilitate the slidable displacement ofthe second pole relative to the first pole.

In another embodiment of the invention, a third pole defines an interiorbore and a third exterior surface with the third pole extending betweena first end and a second end. The first pole is partially disposed inthe third pole for defining a second variable overall tool length. Asecond slide controller includes a second lower clamp and an secondupper clamp. The second lower clamp has a primary arm and a secondaryarm for defining an third coupler interior bore. The second upper clamphas a primary arm and a secondary arm for defining an fourth couplerinterior bore. The second end of the third pole is disposed in the thirdcoupler interior bore of the second lower clamp. A third clampcompressor extends between the primary arm and the secondary arm of thesecond lower clamp and applies a compressive force between the primaryarm and the secondary arm for defining a second lower clamp lock andcoupling the second slide controller with the third pole. A fourth clampcompressor extends between the primary arm and the secondary arm of thesecond upper clamp and applies a compressive force between the primaryarm and the secondary arm for defining an second upper clamp lock andpreventing slidable displacement of the first pole relative to the thirdpole. The fourth clamp compressor applies a non-compressive forcebetween the primary arm and the secondary arm for the second upper clampdefining a second upper slide guide. The second upper slide guidefacilitating the slidable displacement of the first pole relative to thethird pole.

In a more specific embodiment of the invention, a slide magnetic orfirst magnetic is coupled to the slide controller. The slide magneticincludes a disc shape defining a field area and an edge area. The fieldarea of the slide magnetic is coupled to the slide controller forproviding a field contact area between the field area of the slidemagnetic and a metallic surface. The slide magnetic temporarily securesthe extension tool to the metallic surface.

In another embodiment of the invention, a tool is mounted on the secondend of the second pole for engaging an object. The tool comprises ahandle extending between a first end and a second end. A tool head has amounting portion and a working portion. The mounting portion defines amounting bore and an exterior mounting surface. The second end of thehandle is disposed in the mounting bore of the tool head for couplingthe handle to the tool head. The working portion includes a plateextending from the exterior mounting surface of the mounting portion.The plate defines a first side, a second side, a top edge, a side edgeand a bottom edge. A riser body extends from the top edge of the plate.The riser body and the top edge of the plate define a generally L-shapedchannel for receiving the object and maintaining the object against thetool head.

In a more specific embodiment of the invention, a guard cover has abottom shield plate coupled with a first side shield plate and a secondside shield plate for defining a generally U-shaped shield channel. Theguard cover includes an arcuate shape for positioning the bottom edge ofthe plate within the generally U-shaped shield channel. A couplemaintains the guard cover to the plate. The guard cover protects theplate from damage due to engagement between the tool head and theobject.

The foregoing has outlined rather broadly the more pertinent andimportant features of the present invention in order that the detaileddescription that follows may be better understood so that the presentcontribution to the art can be more fully appreciated. Additionalfeatures of the invention will be described hereinafter which form thesubject of the claims of the invention. It should be appreciated bythose skilled in the art that the conception and the specificembodiments disclosed may be readily utilized as a basis for modifyingor designing other structures for carrying out the same purposes of thepresent invention. It should also be realized by those skilled in theart that such equivalent constructions do not depart from the spirit andscope of the invention as set forth in the appended claims.

BRIEF DESCRIPTION OF THE DRAWINGS

For a fuller understanding of the nature and objects of the invention,reference should be made to the following detailed description taken inconnection with the accompanying drawings in which:

FIG. 1 is a front side view of an extension tool in a fully contractedlength of the present invention;

FIG. 2 is a top view of FIG. 1;

FIG. 3 is a bottom view of FIG. 1;

FIG. 4 is a rear side view of FIG. 1;

FIG. 5 is a view similar to FIG. 1 illustrating the extension tool in anintermediate length;

FIG. 6 is a front side view of a second pole of FIG. 1;

FIG. 7 is a front side view of a first pole of FIG. 1;

FIG. 8 is a front side view of a third pole of FIG. 1;

FIG. 9 is a front side view of a fourth pole of FIG. 1;

FIG. 10 is a front side view of a tool head of FIG. 1;

FIG. 11 is a front side view of FIG. 10;

FIG. 12 is a top view of FIG. 10;

FIG. 13 is a top view of a slide controller of FIG. 1;

FIG. 14 is a side view of FIG. 13;

FIG. 15 is a sectional view along line 15-15 in FIG. 13;

FIG. 16 is an exploded view of FIG. 1;

FIG. 17 a view similar to FIG. 1 illustrating the extension tool in afully extended length;

FIG. 18 is a sectional view along line 18-18 in FIG. 17;

FIG. 19 is an enlarged view of a portion of FIG. 17;

FIG. 20 is a sectional view along line 20-20 in FIG. 17;

FIG. 21 is a sectional view along line 21-21 in FIG. 17;

FIG. 22 is a sectional view along line 22-22 in FIG. 17;

FIG. 23 is a sectional view along line 23-23 in FIG. 17;

FIG. 24 is a sectional view along line 24-24 in FIG. 17;

FIG. 25 illustrates the extension tool in the fully extended length andengaging a brake wheel of a railroad car for producing a clockwiserotation of the brake wheel;

FIG. 26 is a sectional view along line 26-26 in FIG. 25 illustrating agenerally L-shaped channel of the head tool receiving and maintainingthe brake wheel against the tool head;

FIG. 27 is a rear view of the brake wheel of FIG. 25 illustrating aspherical body of the tool head receiving and maintaining the brakewheel against the tool head during a vertical ascending forcetransmitted from the extension tool to the brake wheel;

FIG. 28 is a view similar to FIG. 27 illustrating the spherical body ofthe tool head receiving and maintaining the brake wheel against the toolhead during both a vertical and horizontal ascending force transmittedfrom the extension tool to the brake wheel;

FIG. 29 is a view similar to FIG. 25 illustrating the extension toolengaging the brake wheel of a railroad car for producing a counterclockwise rotation of the brake wheel;

FIG. 30 is a sectional view along line 30-30 in FIG. 29 illustrating anarcuate recess of the tool head receiving and maintaining the brakewheel against the tool head;

FIG. 31 is a view similar to FIG. 25 illustrating the extension tool inthe fully extended length and engaging a knuckle coupler of a railroadcar;

FIG. 32 is a top view of a portion of FIG. 31 illustrating the tool headengaged with the knuckle coupler of a railroad car;

FIG. 33 is a view similar to FIG. 32 illustrating the arcuate recess ofthe tool head receiving and maintaining the brake wheel against the toolhead and producing a clockwise pivoting of the knuckle coupler of therailroad car;

FIG. 34 is a side view of a vertical metallic surface wherein a slidemagnetic and a pole magnetic temporarily secure the extension tool tothe vertical metallic surface;

FIG. 35 is a view similar to FIG. 34 illustrating the separation of theextension tool from the vertical metallic surface by first separatingthe pole magnetic from the vertical metallic surface and secondseparating the slide magnetic from the vertical metallic surface;

FIG. 36 is a view similar to FIG. 34 illustrating both a verticalmetallic surface and a horizontal metallic surface wherein a slidemagnetic temporarily secures the extension tool to the vertical metallicsurface and a pole magnetic temporarily secures the extension tool toboth the vertical metallic surface and the horizontal metallic surface;

FIG. 37 is a view similar to FIG. 36 illustrating the separation of theextension tool from both the vertical metallic surface and thehorizontal metallic surface by first separating the pole magnetic fromboth the horizontal metallic surface and the vertical metallic surfaceand second separating the slide magnetic from the vertical metallicsurface;

FIG. 38 is a side view of a guard cover for protecting the tool head;

FIG. 39 is a top view of FIG. 38;

FIG. 40 is a front view of FIG. 38;

FIG. 41 is a sectional view along line 41-41 in FIG. 38;

FIG. 42 is a view similar to FIG. 38 illustrating the guard covercoupled with the tool head;

FIG. 43 is a sectional view along line 43-43 in FIG. 42;

FIG. 44 is a view similar to FIG. 25 illustrating the extension toolengaging the brake wheel of a railroad car for producing a counterclockwise rotation of the brake wheel; and

FIG. 45 is a sectional view along line 45-45 in FIG. 44 illustrating theguard cover protecting the tool head during the extension tool engagingthe brake wheel of a railroad car.

Similar reference characters refer to similar parts throughout theseveral Figures of the drawings.

DETAILED DISCUSSION

FIGS. 1-45 are various views of an extension tool 10. The extension tool10 may be utilized for engaging a railroad car 300 as shown in FIGS.25-33, however the extension tool 10 may be utilized as a supportbetween two objects, for distancing an object from another object, orfor applying a force upon an object that is distanced from anotherobject.

As best shown in FIGS. 1-24, the extension tool 10 comprises a firstpole 20 defining a first interior bore 22 and a first exterior surface24 with the first pole extending between a first end 26 and a second end28. A second pole 40 defines a second interior bore 42 and a secondexterior surface 44 with the second pole 40 extending between a firstend 46 and a second end 48. The second pole 40 is partially disposed inthe first pole 20 for defining a variable overall tool length 60. As thesecond pole 40 is withdrawn from the first pole 20, the variable overalltool length 60 increases as best shown in FIGS. 5, 7, 25, 29, 31 and 44.As the second pole 40 is inserted into the first pole 20, the variableoverall tool length 60 decreases as best shown in FIGS. 1 and 4.

FIGS. 1-5, 13-19, and 23-24 disclose a slide controller 62. The slidecontroller 62 includes a lower clamp 70 and an upper clamp 80. The lowerclamp 70 has a primary arm 72 and a secondary arm 74 for defining afirst coupler interior bore 76. The upper clamp 80 has a primary arm 82and a secondary arm 84 for defining a second coupler interior bore 86.The slide controller 62 has a clamp back 66 that joins the lower clamp70 with the upper clamp 80 and defines an integral one-piece unit 68. Aclamp separator groove 69 divides the slide controller 62 between thelower clamp 70 and the upper clamp 80.

The second end 28 of the first pole 20 is disposed in the first couplerinterior bore 76 of the lower clamp 70. A first clamp compressor 78 thatmay include a first bolt and nut fastener 79 or other hardware extendsbetween the primary arm 72 and the secondary arm 74 of the lower clamp70 through a clamp aperture 110. The first clamp compressor 78 applies afirst compressive force 90 between the primary arm 72 and the secondaryarm 74 for compressing the primary arm 72 and the secondary arm 74against the first pole 20. Upon the primary arm 72 and the secondary arm74 compressing against the first pole 20, the lower clamp 70 defines alower clamp lock 92. The lower clamp lock 92 couples the slidecontroller 62 with the first pole 20. A set screw 64 threadably engagingthe slide controller 62 and the first pole 20 may also be utilized forcoupling the slide controller 62 with the second end 28 of the firstpole 20.

A second clamp compressor 88 that may include a second bolt and nutfastener 89 or other hardware extends between the primary arm 82 and thesecondary arm 84 of the upper clamp 80 through a clamp aperture 110. Thesecond clamp compressor 88 applies a second compressive force 94 betweenthe primary arm 82 and the secondary arm 84 for compressing the primaryarm 82 and the secondary arm 84 against the second pole 40. Upon theprimary arm 82 and the secondary arm 84 compressing against the secondpole 40, the upper clamp 80 defines an upper clamp lock 96. The upperclamp lock 96 prevents slidable displacement of the second pole 40relative to the first pole 20.

Alternatively, the second clamp compressor 88 may apply anon-compressive force 98 between the primary arm 82 and the secondaryarm 74 for permitting the primary arm 82 and the secondary arm 84 to bedistanced from the second pole 40. Upon the primary arm 82 and thesecondary arm 84 being distanced from the second pole 40, the upperclamp 80 defines an upper slide guide 100. The upper slide guide 100facilitates the slidable displacement of the second pole 40 relative tothe first polo 20. By sliding the second pole 40 relative to the firstpole 20, the extension tool 10 may be positioned between an extendedlength 50 and a retracted length 52 for varying the overall length ofthe extension tool 10.

As best shown in FIGS. 1-5 and 16-19, a control knob 102 may be coupledto the second clamp compressor 88 for improving gripping of the secondclamp compressor 88 and increasing the rotational force applied to thesecond clamp compressor 88 to increase the second compressive force 94between the primary arm 82 and the secondary arm 84 of the upper clamp80. The control knob 102 may include a star knob 104 or other mechanicalknobs.

FIGS. 6, 16 and 22 illustrate the extension tool 10 including a bushing120. The bushing 120 defines an internal bore 122 and an exteriorsurface 124. The first end 46 of the second pole 40 is disposed andcoupled to the internal bore 122 of the bushing 120. The bushing 120 maybe secured to the second pole 40 by an adhesive, set pin and/or othersecuring devices. The exterior surface 124 of the bushing 120 slidablyengages with the interior bore 22 of the first pole 22 for defining alower slide guide 126. The lower slide guide 126 and the upper slideguide 100 facilitate the slidable displacement of the second pole 40relative to the first pole 20 by maintaining an alignment between thefirst pole 20 and the second pole 40 for preventing binding between thefirst pole 20 and the second pole 40 during displacement of the secondpole 40 relative to the first pole 20.

Preferably, the first pole 20 and the second pole 40 are formed of ametallic material such as steel, stainless steel, aluminum or otherrigid materials. The bushing 120 is preferably is formed of a polymericmaterial. The metallic material in direct contact with the polymericmaterial creates a metallic to polymeric sliding engagement 128 betweenthe first pole 20 and the second pole 40. The metallic to polymericsliding engagement 128 reduces the friction binding between the firstpole 20 and the second pole 40 during displacement of the second pole 40relative to the first pole 20. The reduced friction between the firstpole 20 and the second pole 40 reduces the force needed to displace thesecond pole 40 relative to the first pole 20.

As shown in FIGS. 15 and 22, the slide controller 62 includes aninterior bore step 106 between and adjacent to the first couplerinterior bore 76 of the lower clamp 70 and the second coupler interiorbore 86 of the upper clamp 80. FIG. 22 illustrates that upon the bushing120 contacting the interior bore step 106, the second pole 40 isprevented from being withdrawn further from the first pole 20 andthereby terminating any further increase in the variable overall toollength 60. As such the interior bore step 106 defines an extended slidestop 108 upon the bushing 120 contacting the interior bore step 106 forterminating the slidable displacement of the second pole 40 relative tothe first pole 20.

During the positioning of the second pole 40 and the first pole 20 inthe extended slide stop 108 position as shown in FIG. 22, the secondpole 40 and bushing 120 make continuous contact with the upper clamp 80of the slide controller 62, the extended slide stop 108 and the firstpole 20 for defining a stabilizing seat 130 for resisting bendingbetween the first pole 20 and the second pole 40.

FIGS. 1-9, 16, 17, 23, 25, 29, 31 and 34-37 illustrate a third pole 160and second slide controller 180 for creating a second variable overalltool length 150 in the extension tool 10. The third pole 160 defines athird interior bore 162 and a third exterior surface 164 with the thirdpole 160 extending between a first end 166 and a second end 168. Thefirst pole 20 is partially disposed in the third pole 160 for definingthe second variable overall tool length 150. As the first pole 20 iswithdrawn from the third pole 160, the second variable overall toollength 150 increases as best shown in FIGS. 5, 7, 25, 29, 31 and 44. Asthe first pole 20 is inserted into the third pole 160, the secondvariable overall tool length 150 decreases as best shown in FIGS. 1 and4.

FIGS. 1-5, 13-19, and 23-24 disclose the second slide controller 180.The second slide controller 180 includes a second lower clamp 182 and asecond upper clamp 184. The second lower clamp 182 has a primary arm 186and a secondary arm 188 for defining a third coupler interior bore 190.The second upper clamp 184 has a primary arm 192 and a secondary arm 194for defining a fourth coupler interior bore 196. The second slidecontroller 180 has a second clamp back 200 that joins the second lowerclamp 182 with the second upper clamp 184 and defines a second integralone-piece unit 202. A second clamp separator groove 204 divides thesecond slide controller 180 between the second lower clamp 182 and thesecond upper clamp 184.

The second end 168 of the third pole 160 is disposed in the thirdcoupler interior bore 190 of the second lower clamp 182. A third clampcompressor 210 that may include a third bolt and nut fastener 212 orother hardware extends between the primary arm 192 and the secondary arm194 of the second lower clamp 182 through a clamp aperture 110. Thethird clamp compressor 210 applies a third compressive force 214 betweenthe primary arm 186 and the secondary arm 188 for compressing theprimary arm 186 and the secondary arm 188 against the third pole 160.Upon the primary arm 186 and the secondary arm 188 compressing againstthe third pole 160, the second lower clamp 182 defines a second lowerclamp lock 216. The second lower clamp lock 216 couples the second slidecontroller 180 with the third pole 160. A set screw 64 threadablyengaging the second slide controller 180 and the third pole 160 may alsobe utilized for coupling the second slide controller 180 with the secondend 28 of the third pole 160.

A fourth clamp compressor 220 that may include a fourth bolt and nutfastener 222 or other hardware extends between the primary arm 192 andthe secondary arm 194 of the second upper clamp 184 through a clampaperture 110. The fourth clamp compressor 220 applies a fourthcompressive force 224 between the primary arm 192 and the secondary arm194 for compressing the primary arm 192 and the secondary arm 194against the first pole 20. Upon the primary arm 192 and the secondaryarm 194 compressing against the first pole 20, the second upper clamp184 defines a second upper clamp lock 226. The second upper clamp lock226 prevents slidable displacement of the first pole 20 relative to thethird pole 160.

Alternatively, the fourth clamp compressor 220 may apply a secondnon-compressive force 230 between the primary arm 192 and the secondaryarm 194 for permitting the primary arm 192 and the secondary arm 194 tobe distanced from the first pole 20. Upon the primary arm 192 and thesecondary arm 194 being distanced from the first pole 20, the secondupper clamp 184 defines a second upper slide guide 232. The second upperslide guide 232 facilitates the slidable displacement of the first pole20 relative to the third pole 160. By sliding the first pole 20 relativeto the third pole 160, the extension tool 10 may be positioned betweenan second extended length 55 and a second retracted length 56 forvarying the overall length of the extension tool 10.

As best shown in FIGS. 1-5 and 16-19, a second control knob 240 may becoupled to the fourth clamp compressor 220 for improving gripping of thefourth clamp compressor 220 and increasing the rotational force appliedto the fourth clamp compressor 220 to increase the second fourthcompressive force 224 between the primary arm 192 and the secondary arm194 of the second upper clamp 184. The second control knob 240 mayinclude a second star knob 242 or other mechanical knobs. As shown inFIGS. 1, 4, 5, 16 and 17, the slide controller 62 and the second slidecontroller 240 have an inverted orientation 244 relative to the firstpole 20. The inverted orientation 244 provides a staggered orientation246 of the control knob 102 and the second control knob 240 forpermitting the abutment of the slide controller 62 with the second slidecontroller 240 and a larger control knob 102 and second control knob240.

As best shown in FIGS. 1, 4 and 16 the slide controller 62 includes alower break surface 260 and the second slide controller 180 includes anupper break surface 262. The lower break surface 260 and the upper break262 surface define a contracted slide stop 264 upon the lower breaksurface 260 contacting the upper break surface 262. The contracted slidestop 264 terminates the slidable displacement of the first pole 20relative to the third pole 160.

FIGS. 6, 16 and 23 illustrate the extension tool 10 including a secondbushing 270. The second bushing 270 defines an internal bore 272 and anexterior surface 274. The first end 26 of the first pole 20 is disposedand coupled to the internal bore 272 of the second bushing 270. Thesecond bushing 270 may be secured to the first pole 20 by an adhesive,set pin and/or other securing devices. The exterior surface 274 of thesecond bushing 270 slidably engages with the interior bore 162 of thethird pole 160 for defining a second lower slide guide 276. The secondlower slide guide 276 and the second upper slide guide 232 facilitatethe slidable displacement of the first pole 20 relative to the thirdpole 160 by maintaining an alignment between the first pole 20 and thethird pole 160 for preventing binding between the first pole 20 and thethird pole 160 during displacement of the first pole 20 relative to thethird pole 160.

Preferably, the third pole 160 is formed of a metallic material such assteel, stainless steel, aluminum or other rigid materials. The secondbushing 270 is preferably is formed of a polymeric material. Themetallic material in direct contact with the polymeric material createsa metallic to polymeric sliding engagement 128 between the first pole 20and the third pole 160. The metallic to polymeric sliding engagement 128reduces the friction binding between the first pole 20 and the thirdpole 160 during displacement of the first pole 20 relative to the thirdpole 160. The reduced friction between the first pole 20 and the thirdpole 160 reduces the force needed to displace the first pole 20 relativeto the third pole 160.

As shown in FIG. 23, the second slide controller 180 includes a secondinterior bore step 206 between and adjacent to the third couplerinterior bore 190 of the second lower clamp 182 and the fourth couplerinterior bore 196 of the second upper clamp 184. Upon the second bushing270 contacting the second interior bore step 206, the first pole 20 isprevented from being withdrawn further from the third pole 160 andthereby terminating any further increase in the second variable overalltool length 150. As such the second interior bore step 206 defines ansecond extended slide stop 208 upon the second bushing 270 contactingthe second interior bore step 206 for terminating the slidabledisplacement of the first pole 20 relative to the third pole 160.

During the positioning of the first pole 20 and the third pole 160 inthe second extended slide stop 208 position as shown in FIG. 23, thefirst pole 20 and second bushing 270 make continuous contact with thesecond upper clamp 184 of the second slide controller 180, the secondextended slide stop 208 and the third pole 160 for defining a secondstabilizing seat 280 for resisting bending between the first pole 20 andthe third pole 160.

The extension tool 10 illustrated in FIGS. 1-45 includes a fourth pole290 and a third slide controller 292. The fourth pole 170 and thirdslide controller 292 include all of the structural equivalents of thefirst and second poles 20, 40 and the first and second slide controllers62, 180 respectively. The extension tool 10 may have an overall lengthof thirty-one (31) inches in the retracted length 52 as shown in FIGS.1, 4 and 5 and an overall length of one hundred (100) inches in theextended length 50 as shown in FIGS. 25, 29 and 31. It should beunderstood that additional poles and slide controllers may be added tofurther extend the extension tool 10 in length.

FIGS. 25-33 illustrate the extension tool 10 engaging a railroad car300. The railroad car 300 includes a container 302 having a front side304, a rear side 306, a left side 308 and a right side 310. The railroadcar 300 further includes a plurality of wheels 312 for rotatablyengaging along a rail system 314. The plurality of wheels 312 supportthe container 302 and permitting the container 302 to be displaced tomultiple locations. A brake 316 engages the plurality of wheels 312 forterminating rotation of the plurality of wheels 312. A wheel brake 318is rotatably coupled to the railroad car 300. The wheel brake 300 has aplurality of spokes 320 extending between a central hub 322 and acircular rail 324. A brake linkage 326 couples the wheel brake 318 withthe brake 316 such that upon rotation of the wheel brake 318 the brake316 either compresses or expands relative to the plurality of wheels312.

The front side 304 and/or the rear side 306 of the railroad car 300include a knuckle coupler 330 for linking with a second railroad car332. The knuckle coupler 330 has a generally J-shape hook 334 forlinking with other generally J-shape hooks 334. The knuckle coupler 330pivotably engages the railroad car 300 for permitting the generallyJ-shape hook 334 to be displaced during engagement with anothergenerally J-shape hook 334.

In the past an individual 12 was required to ascend a railroad carlatter 340 in order to rotate the wheel brake 318. Furthermore, prior tothe coupling of the knuckle couplers 330, the individual 12 may berequired to apply a horizontal force to the knuckle coupler 330 forpivoting the generally J-shape hooks 334. In the past, the individual 12may have utilized their limbs 14 for pivoting the generally J-shapehooks 334. Having the individual 12 ascending the railroad car latter340 and positioned in close proximity to the knuckle coupler 330 and theplurality of wheels 312 could prove highly dangerous by causing greatbodily harm or death.

The extension tool 10 is utilized with a railroad car 300 as shown inFIGS. 25-33 by including a head tool 350 secured to the second end 48 ofthe second pole 40. The first pole 20 defines a handle 352 wherein theindividual 12 can grasp the extension tool 10. The exterior surface 24of the first pole 20 may have a textured surface 30 for assisting ingrasping the extension tool 10.

As best shown in FIGS. 1-5 and 10-12, 16, 21, 27, 28, 30, 32, 33 and38-42, the tool head 350 has a mounting portion 354 and a workingportion 356. The mounting portion 354 defines a mounting bore 360 and anexterior mounting surface 362. The second end 48 of the second pole 40is disposed in the mounting bore 360 of the tool head 350 for couplingthe second pole 40 to the tool head 350. The working portion 356includes a plate 364 extending from the exterior mounting surface 362 ofthe mounting portion 354. The plate 364 defining a first side 366, asecond side 368, a top edge 370, a side edge 372 and a bottom edge 374.The top edge 370 may be utilized for engaging the wheel brake 318, theknuckle coupler 330 or other object for transferring a pushing force 380from the first pole 20 to the wheel brake 318, the knuckle coupler 330or other object. More specifically, the top edge 370 may engage thewheel brake 318 of the railroad car 300 for transferring the pushingforce 380 from the tool head 350 to the wheel brake 318 and causing arotation 384. The bottom edge 374 may be utilized for engaging the wheelbrake 318, the knuckle coupler 330 or other object for transferring apulling force 382 from the first pole 20 to the wheel brake 318, theknuckle coupler 330 or other object. More specifically, the bottom edge374 may engage the wheel brake 318 of the railroad car 300 fortransferring the pulling force 382 from the tool head 350 to the wheelbrake 318 and causing a rotation 384.

As best shown in FIGS. 10-12, 27 and 28, the head tool 350 may alsoinclude a riser body 390 extending from the top edge 370 of the plate364. The riser body 390 and the top edge 370 of the plate 364 define agenerally L-shaped channel 392 for receiving and maintaining the wheelbrake 318, the knuckle coupler 330 or other objects against the toolhead 350. The riser body may further include a spherical body 394extending from the top edge 370 of the plate 364 and defining a firstdome 396 adjacent to and extending beyond the first side 366 and asecond dome 398 adjacent to and extending beyond the second side 368.The spherical body 394 and the top edge 370 of the plate 364 defining agenerally L-shaped channel 392 for receiving and maintaining the wheelbrake 318, the knuckle coupler 330 or other objects against the toolhead 350. The first dome 396, the first side 366 and the top edge 370define a first retainer 400 for further receiving and maintaining thewheel brake 318, the knuckle coupler 330 or other objects against thetool head 350. Similarly, the second dome 398, the second side 368 andthe top edge 370 define a second retainer 402 for further receiving andmaintaining the wheel brake 318, the knuckle coupler 330 or otherobjects against the tool head 350. The bottom edge 374 may define anarcuate recess 404 for further receiving and maintaining the wheel brake318, the knuckle coupler 330 or other objects against the tool head 350.More specifically, the arcuate recess 404 may encircle one of theplurality of spokes 320. The tool head 350 may further include a lockingbore 358. The locking bore 358 traverses the working portion 356 forsecuring the extension tool 10 to the railroad car 300.

The tool head 350 may be constructed from an integral one piece unitfrom metallic material such as steel, stainless steel, aluminum, brassor other rigid materials. The tool head 350 constructed from brass wouldbe beneficial to reduce sparks generated from contact between the toolhead 350 and the wheel brake 318, the knuckle coupler 330 or otherobjects. The spark reduction characteristic of the tool head 350 wouldbe significant if the extension tool 10 was utilized in a flammableenvironment.

As shown in FIGS. 16 and 21, a cylindrical insulating sleeve 410 may bepositioned between the second end 48 of the second pole 40 and the toolhead 350. The cylindrical insulating sleeve 410 defines an insulatingsleeve bore 412 and an insulating exterior surface 414. The cylindricalinsulating sleeve 410 is constructed from an insulator material 416 suchas thermoplastic polymer or other insulating materials.

The second end 48 of the second pole 40 is disposed in the insulatingsleeve bore 412 for frictionally coupling the second pole 40 to thecylindrical insulating sleeve 410. The cylindrical insulating sleeve 410is further disposed in the mounting bore 360 of the tool head 350 forfrictionally coupling the cylindrical insulating sleeve 410 to the toolhead 350. The cylindrical insulating sleeve 410 is positioned betweenthe second pole 40 and the tool head 350 for defining an insulatorseparator 418 for resisting the flow of electric charge between thesecond pole 40 and the tool head 350.

To mechanically couple the second pole 40 with both the cylindricalinsulating sleeve 410 and tool head 350, a set pin 420 may traverseapertures in the mounting portion 354, the cylindrical insulating sleeve410 and the second pole 40 for defining a mechanical couple 422 andpreventing displacement between the mounting portion 354, thecylindrical insulating sleeve 410 and the second pole 40. The set pin420 may be constructed of a metallic material. Alternatively, set pin420 may be constructed of an insulator material 416 such asthermoplastic polymer or other insulating materials for resisting theflow of electric charge between the second pole 40 and the tool head350.

If the head tool 350 is constructed from a metal that is subject to weardue to engagement between the head tool 350 and the wheel brake 318, theknuckle coupler 330 or other objects, the head tool 350 may include aguard cover 430 as shown in FIGS. 38-45. The guard cover 430 has abottom shield plate 432 coupled with a first side shield plate 434 and asecond side shield plate 436 for defining a generally U-shaped shieldchannel 438. The guard cover 430 includes an arcuate shape 440 formatching the bottom edge 374 of the plate 364 within the generallyU-shaped shield channel 438. A couple 442 that may include a rivet,adhesive or other fastening devices maintains the guard cover 430 to theplate 364. The guard cover 430 protects the arcuate recess 404 of theplate 364 from damage due to engagement between the tool head 350 andthe wheel brake 318, the knuckle coupler 330 or other objects.

The guard cover 430 may be constructed from an integral one piece unitfrom metallic material such as steel, stainless steel, aluminum, brassor other rigid materials. The guard cover 430 constructed from brasswould be beneficial to reduce sparks generated from contact between theguard cover 430 and the wheel brake 318, the knuckle coupler 330 orother objects. The spark reduction characteristic of the guard cover 430would be significant if the extension tool 10 was utilized in aflammable environment.

As best shown in FIGS. 1-5, 23 and 34-37, in order to temporarily securethe extension tool 10 to a metallic surface 450, the extension tool 10may include a magnetic 452 coupled to the extension tool 10. Forexample, the extension tool 10 may be temporality secured on the insideof a locomotive, on the exterior of the locomotive or on the exterior ofthe railroad car 300. The magnetic 452 may include a B-42 and/or B-60neodymium pot magnet. The magnetic 452 may include a slide magnetic 454or first magnetic 454 coupled to the slide controller 62 or 180. Theslide magnetic 454 includes a disc shape 456 defining a field area 458and an edge area 460. The field area 458 of the slide magnetic 454 iscoupled to the slide controller 62 or 180 for providing a field contactarea 462 between the field area 458 of the slide magnetic 454 and ametallic surface 450. The slide magnetic 454 temporarily secures theextension tool 10 to the metallic surface 450.

The magnetic 452 may also include a pole magnetic 470 or second magnetic470 coupled to the first end 26 of the first pole 20 or as illustratedto the fourth pole 290. Similarly, the pole magnetic 470 including adisc shape 472 defining a field area 474 and an edge area 476. The fieldarea 474 of the pole magnetic 470 is coupled to the first end 26 of thefirst pole 20 or as illustrated to the fourth pole 290 for providing afield contact area 478 between the field area 474 of the pole magnetic470 and the metallic surface 450 as shown in FIGS. 36 and 37 and/or anedge contact area 480 between the edge area 476 of the pole magnetic 470and the metallic surface 450 as shown in FIGS. 34 and 35. The polemagnetic 470 temporarily secures the extension tool 10 to the metallicsurface 450.

FIGS. 1-5, 23 and 34-37 further illustrate the field contact area 462 ofthe slide magnetic 454 having a greater contact area than the edgecontact area 480 of the pole magnetic 470 for providing an increasedmagnetic force associated with the field contact area 462 and adecreased magnetic force associated with the edge contact area 480 fortemporarily securing the extension tool 10 to the metallic surface 450and facilitating the removal of the extension tool 10 from the metallicsurface 450 by first separating the decreased magnetic force andthereafter the extension tool 10 defining a lever bar 482 tofacilitating the separation of the increased magnetic force. The leverbar 482 comprises the slide magnetic is the fulcrum point 484, the firstpole 10 is the force leg 486 and the head tool 350 is the pivot leg 488.

FIGS. 1-5, 23 and 34-37 further illustrate the pole magnetic 470 havinga magnetic diameter length 490. The first pole 20 has an outsidediameter pole length 492. The magnetic diameter length 490 is preferablygreater than the outside diameter pole length 492 for defining an endknob 494 in the pole magnetic 470 relative to the first pole 20. The endknob 494 improves grasping of the extension tool 10 by the individual12.

The present disclosure includes that contained in the appended claims aswell as that of the foregoing description. Although this invention hasbeen described in its preferred form with a certain degree ofparticularity, it is understood that the present disclosure of thepreferred form has been made only by way of example and that numerouschanges in the details of construction and the combination andarrangement of parts may be resorted to without departing from thespirit and scope of the invention.

1. An extension tool, comprising: a first pole defining an interior boreand a first exterior surface with said first pole extending between afirst end and a second end; a second pole defining a second exteriorsurface with said second pole extending between a first end and a secondend; said second pole being partially disposed in said first pole fordefining a variable overall tool length; a slide controller including alower clamp and an upper clamp; said lower clamp having a primary armand a secondary arm for defining a first coupler interior bore; saidupper clamp having a primary arm and a secondary arm for defining asecond coupler interior bore; said second end of said first poledisposed in said first coupler interior bore of said lower clamp; afirst clamp compressor extending between said primary arm and saidsecondary arm of said lower clamp and applying a compressive forcebetween said primary arm and said secondary arm for defining a lowerclamp lock and coupling said slide controller with said first pole; asecond clamp compressor extending between said primary arm and saidsecondary arm of said upper clamp and applying a compressive forcebetween said primary arm and said secondary arm for defining an upperclamp lock and preventing slidable displacement of said second polerelative to said first pole; said second clamp compressor applying anon-compressive force between said primary arm and said secondary armfor said upper clamp defining an upper slide guide; and said upper slideguide facilitating the slidable displacement of said second polerelative to said first pole.
 2. An extension tool as set forth in claim1, further including a control knob coupled to said second clampcompressor for improving gripping of said second clamp compressor andincreasing the rotational force applied to said second clamp compressorto increase the compressive force between said primary arm and saidsecondary arm of said upper clamp.
 3. An extension tool as set forth inclaim 1, further including a bushing defining an internal bore and anexterior surface; said first end of said second pole disposed andcoupling to said internal bore of said bushing; said exterior surface ofsaid bushing slidably engaging with said interior bore of said firstpole for defining a lower slide guide; and said lower slide guide andsaid upper slide guide facilitating the slidable displacement of saidsecond pole relative to said first pole.
 4. An extension tool as setforth in claim 1, further including a bushing defining an internal boreand an exterior surface; said first end of said second pole disposed andcoupling to said internal bore of said bushing; said exterior surface ofsaid bushing slidably engaging with said interior bore of said firstpole for defining a lower slide guide; said lower slide guide and saidupper slide guide facilitating the slidable displacement of said secondpole relative to said first pole; said first pole and said second poleare formed of a metallic material; and said bushing is formed of apolymeric material for creating a metallic to polymeric slidingengagement between said first pole and said second pole.
 5. An extensiontool as set forth in claim 1, wherein said slide controller includes aninterior bore step between said lower clamp and said upper clamp; andsaid interior bore step defining an extended slide stop upon saidbushing contacting said interior bore step for terminating the slidabledisplacement of said second pole relative to said first pole.
 6. Anextension tool as set forth in claim 1, further including a third poledefining an interior bore and a third exterior surface with said thirdpole extending between a first end and a second end; said first polebeing partially disposed in said third pole for defining a secondvariable overall tool length; a second slide controller including asecond lower clamp and an second upper clamp; said second lower clamphaving a primary arm and a secondary arm for defining an third couplerinterior bore; said second upper clamp having a primary arm and asecondary arm for defining an fourth coupler interior bore; said secondend of said third pole disposed in said third coupler interior bore ofsaid second lower clamp; a third clamp compressor extending between saidprimary arm and said secondary arm of said second lower clamp andapplying a compressive force between said primary arm and said secondaryarm for defining a second lower clamp lock and coupling said secondslide controller with said third pole; a fourth clamp compressorextending between said primary arm and said secondary arm of said secondupper clamp and applying a compressive force between said primary armand said secondary arm for defining an second upper clamp lock andpreventing slidable displacement of said first pole relative to saidthird pole; said fourth clamp compressor applying a non-compressiveforce between said primary arm and said secondary arm for said secondupper clamp defining an second upper slide guide; and said second upperslide guide facilitating the slidable displacement of said first polerelative to said third pole.
 7. An extension tool as set forth in claim1, further including a third pole defining an interior bore and a thirdexterior surface with said third pole extending between a first end anda second end; said first pole being partially disposed in said thirdpole for defining a second variable overall tool length; a second slidecontroller including a second lower clamp and an second upper clamp;said second lower clamp having a primary arm and a secondary arm fordefining an third coupler interior bore; said second upper clamp havinga primary arm and a secondary arm for defining an fourth couplerinterior bore; said second end of said third pole disposed in said thirdcoupler interior bore of said second lower clamp; a third clampcompressor extending between said primary arm and said secondary arm ofsaid second lower clamp and applying a compressive force between saidprimary arm and said secondary arm for defining a second lower clamplock and coupling said second slide controller with said third pole; afourth clamp compressor extending between said primary arm and saidsecondary arm of said second upper clamp and applying a compressiveforce between said primary arm and said secondary arm for defining ansecond upper clamp lock and preventing slidable displacement of saidfirst pole relative to said third pole; said fourth clamp compressorapplying a non-compressive force between said primary arm and saidsecondary arm for said second upper clamp defining an second upper slideguide; said second upper slide guide facilitating the slidabledisplacement of said first pole relative to said third pole; said slidecontroller including a lower break surface; said second slide controllerincluding an upper break surface; and said lower break surface and saidupper break surface defining a contracted slide stop upon said lowerbreak surface contacting said upper break surface for terminating theslidable displacement of said first pole relative to said third pole. 8.An extension tool as set forth in claim 1, further including a bushingdefining an internal bore and an exterior surface; said first end ofsaid second pole disposed and coupling to said internal bore of saidbushing; said exterior surface of said bushing slidably engaging withsaid interior bore of said first pole for defining a lower slide guide;said lower slide guide and said upper slide guide facilitating theslidable displacement of said second pole relative to said first pole; athird pole defining an interior bore and a third exterior surface withsaid third pole extending between a first end and a second end; a secondbushing defining an internal bore and an exterior surface; said firstend of said first pole disposed and coupling to said internal bore ofsaid second bushing; said first pole being partially disposed in saidthird pole with said exterior surface of said second bushing slidablyengaging with said interior bore of said third pole for defining asecond lower slide guide; a second slide controller including a secondlower clamp and an second upper clamp; said second lower clamp having aprimary arm and a secondary arm for defining an third coupler interiorbore; said second upper clamp having a primary arm and a secondary armfor defining an fourth coupler interior bore; said second end of saidthird pole disposed in said third coupler interior bore of said secondlower clamp; a third clamp compressor extending between said primary armand said secondary arm of said second lower clamp and applying acompressive force between said primary arm and said secondary arm fordefining a second lower clamp lock and coupling said second slidecontroller with said third pole; a fourth clamp compressor extendingbetween said primary arm and said secondary arm of said second upperclamp and applying a compressive force between said primary arm and saidsecondary arm for defining an second upper clamp lock and preventingslidable displacement of said first pole relative to said third pole;said fourth clamp compressor applying a non-compressive force betweensaid primary arm and said secondary arm for said second upper clampdefining an second upper slide guide; and said second lower slide guideand said second upper slide guide facilitating the slidable displacementof said first pole relative to said third pole.
 9. An extension tool asset forth in claim 1, further including a third pole defining aninterior bore and a third exterior surface with said third poleextending between a first end and a second end; said first pole beingpartially disposed in said third pole for defining a second variableoverall tool length; a second slide controller including a second lowerclamp and an second upper clamp; said second lower clamp having aprimary arm and a secondary arm for defining an third coupler interiorbore; said second upper clamp having a primary arm and a secondary armfor defining an fourth coupler interior bore; said second end of saidthird pole disposed in said third coupler interior bore of said secondlower clamp; a third clamp compressor extending between said primary armand said secondary arm of said second lower clamp and applying acompressive force between said primary arm and said secondary arm fordefining a second lower clamp lock and coupling said second slidecontroller with said third pole; a fourth clamp compressor extendingbetween said primary arm and said secondary arm of said second upperclamp and applying a compressive force between said primary arm and saidsecondary arm for defining an second upper clamp lock and preventingslidable displacement of said first pole relative to said third pole;said fourth clamp compressor applying a non-compressive force betweensaid primary arm and said secondary arm for said second upper clampdefining an second upper slide guide; and said second upper slide guidefacilitating the slidable displacement of said first pole relative tosaid third pole; a control knob coupled to said second clamp compressorfor improving gripping of said second clamp compressor and increasingthe rotational force applied to said second clamp compressor to increasethe compressive force between said primary arm and said secondary arm ofsaid upper clamp; a second control knob coupled to said fourth clampcompressor for improving gripping of said fourth clamp compressor andincreasing the rotational force applied to said fourth clamp compressorto increase the compressive force between said primary arm and saidsecondary arm of said second upper clamp; and said control knob and saidsecond control knob having a staggered orientation for abutting saidslide controller and said second slide controller.
 10. An extension toolas set forth in claim 1, further including a magnetic coupled to saidextension tool for temporarily securing the extension tool to a metallicsurface.
 11. An extension tool as set forth in claim 1, furtherincluding a slide magnetic coupled to said slide controller; said slidemagnetic including a disc shape defining a field area and an edge area;said field area of said slide magnetic coupled to said slide controllerfor providing a field contact area between said field area of said slidemagnetic and a metallic surface; and said slide magnetic temporarilysecuring the extension tool to the metallic surface.
 12. An extensiontool as set forth in claim 1, further including a pole magnetic coupledto said first end of said first pole; said pole magnetic including adisc shape defining a field area and an edge area; and said field areaof said pole magnetic coupled to said first end of said first pole forproviding a field contact area between said field area of said polemagnetic and a metallic surface and/or an edge contact area between saidedge area of said pole magnetic and the metallic surface; and said polemagnetic temporarily securing the extension tool to the metallicsurface.
 13. An extension tool as set forth in claim 1, furtherincluding a pole magnetic coupled to said first end of said first pole;said pole magnetic including a disc shape defining a field area and anedge area; said field area of said pole magnetic coupled to said firstend of said first pole for providing a field contact area between saidfield area of said pole magnetic and a metallic surface and/or an edgecontact area between said edge area of said pole magnetic and themetallic surface; said pole magnetic having a magnetic diameter length;said first pole having an outside diameter pole length; said magneticdiameter length being greater than said outside diameter pole length forsaid pole magnetic defining an end knob and improving grasping of saidextension tool; and said pole magnetic temporarily securing theextension tool to the metallic surface.
 14. An extension tool as setforth in claim 1, further including a first magnetic coupled to saidslide controller; said first magnetic including a disc shape defining afield area and an edge area; said field area of said first magneticcoupled to said slide controller for providing a field contact areabetween said field area of said first magnetic and a metallic surface; asecond magnetic coupled to said first end of said first pole; saidsecond magnetic including a disc shape defining a field area and an edgearea; said field area of said second magnetic coupled to said first endof said first pole for providing a edge contact area between said edgearea of said second magnetic and a metallic surface; said first magneticand said second magnetic temporarily securing the extension tool to themetallic surface; and said field contact area having a greater contactarea than said edge contact area for providing an increased magneticforce associated with said field contact area and a decreased magneticforce associated with said edge contact area for temporarily securingthe extension tool to the metallic surface and facilitating the removalof the extension tool from the metallic surface by first separating saiddecreased magnetic force and thereafter said increased magnetic force.15. An extension tool as set forth in claim 1, further including a toolhead having a mounting portion and a working portion; said mountingportion defining a mounting bore and an exterior mounting surface; saidsecond end of said second pole disposed in said mounting bore of saidtool head for coupling said second pole to said tool head; said workingportion including a plate extending from said exterior mounting surfaceof said mounting portion; said plate defining a first side, a secondside, a top edge, a side edge and a bottom edge; said top edge engagingan object for transferring a pushing force from said first pole to saidobject; and said bottom edge engaging said object for transferring apulling force from said first pole to said object.
 16. A tool forengaging an object, comprising: a handle extending between a first endand a second end; a tool head having a mounting portion and a workingportion; said mounting portion defining a mounting bore and an exteriormounting surface; said second end of said handle disposed in saidmounting bore of said tool head for coupling said handle to said toolhead; said working portion including a plate extending from saidexterior mounting surface of said mounting portion; said plate defininga first side, a second side, a top edge, a side edge and a bottom edge;a riser body extending from said top edge of said plate; and said riserbody and said top edge of said plate defining a generally L-shapedchannel for receiving the object and maintaining the object against saidtool head.
 17. A tool for engaging an object as set forth in claim 16,wherein said riser body defines a spherical body extending from said topedge of said plate and defining a first dome adjacent to and extendingbeyond said first side and a second dome adjacent to and extendingbeyond said second side; said spherical body and said top edge of saidplate defining a generally L-shaped channel for receiving the object andmaintaining the object against said tool head; a first retainer definedby said first dome, said first side and said top edge for receiving theobject and maintaining the object against said tool head; and a secondretainer defined by said second dome, said second side and said top edgefor receiving the object and maintaining the object against said toolhead.
 18. A tool for engaging an object as set forth in claim 16,wherein said bottom edge defines an arcuate recess for receiving theobject and maintaining the object against said tool head.
 19. A tool forengaging an object as set forth in claim 16, wherein said bottom edgedefines an arcuate recess for receiving the object and maintaining theobject against said tool head; a guard cover having a bottom shieldplate coupled with a first side shield plate and a second side shieldplate for defining a generally U-shaped shield channel; said guard coverincluding an arcuate shape for positioning said bottom edge of saidplate within said generally U-shaped shield channel; a couplemaintaining said guard cover to said plate; and said guard coverprotecting said plate from damage due to engagement between said toolhead and the object.
 20. An extension tool for engaging a railroad car,the railroad car including a plurality of wheels for rotatably engagingalong a rail system, the plurality of wheels supporting a container, abrake engaging the plurality of wheels for terminating rotation of theplurality of wheels, a wheel brake rotatably coupling to the railroadcar, a brake linkage coupling the wheel brake with the brake, the brakecompressing or expanding relative to the plurality of wheels uponrotating the wheel brake, the extension tool comprising: a first poledefining an interior bore and a first exterior surface with said firstpole extending between a first end and a second end; a second poledefining a second exterior surface with said second pole extendingbetween a first end and a second end; a bushing defining an internalbore and an exterior surface; said first end of said second poledisposed and coupling to said internal bore of said bushing; said secondpole being partially disposed in said first pole with said exteriorsurface of said bushing slidably engaging with said interior bore ofsaid first pole for defining a lower slide guide; a slide controllerincluding a lower clamp and an upper clamp; said lower clamp having aprimary arm and a secondary arm for defining a first coupler interiorbore; said upper clamp having a primary arm and a secondary arm fordefining a second coupler interior bore; said second end of said firstpole disposed in said first coupler interior bore of said lower clamp; afirst clamp compressor extending between said primary arm and saidsecondary arm of said lower clamp and applying a compressive forcebetween said primary arm and said secondary arm for defining a lowerclamp lock and coupling said slide controller with said first pole; asecond clamp compressor extending between said primary arm and saidsecondary arm of said upper clamp and applying a compressive forcebetween said primary arm and said secondary arm for defining an upperclamp lock and preventing slidable displacement of said second polerelative to said first pole; said second clamp compressor applying anon-compressive force between said primary arm and said secondary armfor said upper clamp defining an upper slide guide; said lower slideguide and said upper slide guide facilitating the slidable displacementof said second pole relative to said first pole; a tool head having amounting portion and a working portion; said mounting portion defining amounting bore and an exterior mounting surface; said second end of saidsecond pole disposed in said mounting bore of said tool head forcoupling said second pole to said tool head; said working portionincluding a plate extending from said exterior mounting surface of saidmounting portion; said plate defining a first side, a second side, a topedge, a side edge and a bottom edge; said top edge engaging the wheelbrake of the railroad car for transferring a pushing force from saidtool head to the wheel brake and causing a rotation; and said bottomedge engaging the wheel brake of the railroad car for transferring apulling force from said tool head to the wheel brake and causing arotation.